[INFO] cloning repository https://github.com/gio256/rub
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gio256/rub" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgio256%2Frub", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgio256%2Frub'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9f0f044d9a0a05a3174d40173ebffbc875c33e57
[INFO] checking gio256/rub against master#b389b0ab72cb0aa9acf4df0ae0c0e12090782da9 for pr-128351-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgio256%2Frub" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gio256/rub on toolchain b389b0ab72cb0aa9acf4df0ae0c0e12090782da9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b389b0ab72cb0aa9acf4df0ae0c0e12090782da9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gio256/rub
[INFO] finished tweaking git repo https://github.com/gio256/rub
[INFO] tweaked toml for git repo https://github.com/gio256/rub written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/gio256/rub already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b389b0ab72cb0aa9acf4df0ae0c0e12090782da9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+b389b0ab72cb0aa9acf4df0ae0c0e12090782da9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8e1e09d81e49abe763bb9fcb2bb607ac663facf7f28287306e7de5ef48a71fe7
[INFO] running `Command { std: "docker" "start" "-a" "8e1e09d81e49abe763bb9fcb2bb607ac663facf7f28287306e7de5ef48a71fe7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e1e09d81e49abe763bb9fcb2bb607ac663facf7f28287306e7de5ef48a71fe7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e1e09d81e49abe763bb9fcb2bb607ac663facf7f28287306e7de5ef48a71fe7", kill_on_drop: false }`
[INFO] [stdout] 8e1e09d81e49abe763bb9fcb2bb607ac663facf7f28287306e7de5ef48a71fe7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+b389b0ab72cb0aa9acf4df0ae0c0e12090782da9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 18a1537e4eb2a5ce914bd22c3534e56fa2a262adeb0235c3e5915921cf5804df
[INFO] running `Command { std: "docker" "start" "-a" "18a1537e4eb2a5ce914bd22c3534e56fa2a262adeb0235c3e5915921cf5804df", kill_on_drop: false }`
[INFO] [stderr]     Checking rub v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `Command { std: "docker" "inspect" "18a1537e4eb2a5ce914bd22c3534e56fa2a262adeb0235c3e5915921cf5804df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18a1537e4eb2a5ce914bd22c3534e56fa2a262adeb0235c3e5915921cf5804df", kill_on_drop: false }`
[INFO] [stdout] 18a1537e4eb2a5ce914bd22c3534e56fa2a262adeb0235c3e5915921cf5804df
[INFO] checking gio256/rub against try#16d823b1c168ce52c66ccc00dfd686f775a45c65 for pr-128351-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgio256%2Frub" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gio256/rub on toolchain 16d823b1c168ce52c66ccc00dfd686f775a45c65
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+16d823b1c168ce52c66ccc00dfd686f775a45c65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gio256/rub
[INFO] finished tweaking git repo https://github.com/gio256/rub
[INFO] tweaked toml for git repo https://github.com/gio256/rub written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/gio256/rub already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+16d823b1c168ce52c66ccc00dfd686f775a45c65" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+16d823b1c168ce52c66ccc00dfd686f775a45c65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 543890176f527acf74c8d9d4be866ccaf1c38283c83cbb4f271cf4cdc60a9871
[INFO] running `Command { std: "docker" "start" "-a" "543890176f527acf74c8d9d4be866ccaf1c38283c83cbb4f271cf4cdc60a9871", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "543890176f527acf74c8d9d4be866ccaf1c38283c83cbb4f271cf4cdc60a9871", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "543890176f527acf74c8d9d4be866ccaf1c38283c83cbb4f271cf4cdc60a9871", kill_on_drop: false }`
[INFO] [stdout] 543890176f527acf74c8d9d4be866ccaf1c38283c83cbb4f271cf4cdc60a9871
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+16d823b1c168ce52c66ccc00dfd686f775a45c65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9066e5a3b69c5f911d01f3704f4df91723f7ddc8d1043c23adf943a56d3c2500
[INFO] running `Command { std: "docker" "start" "-a" "9066e5a3b69c5f911d01f3704f4df91723f7ddc8d1043c23adf943a56d3c2500", kill_on_drop: false }`
[INFO] [stderr]     Checking rub v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: casting `&T` to `&UnsafeCell<T>` is undefined behavior, even if the reference is unused, consider using an `UnsafeCell` on the original data
[INFO] [stdout]    --> src/lib.rs:172:26
[INFO] [stdout]     |
[INFO] [stdout] 171 |         let cell = &x as *const usize as *const UnsafeCell<usize>;
[INFO] [stdout]     |                    ---------------------------------------------- casting happend here
[INFO] [stdout] 172 |         let _ = unsafe { &*cell }; // UB
[INFO] [stdout]     |                          ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: cast from `usize` to `UnsafeCell<usize>`
[INFO] [stdout]     = note: `#[deny(unsafe_cell_reference_casting)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rub` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "9066e5a3b69c5f911d01f3704f4df91723f7ddc8d1043c23adf943a56d3c2500", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9066e5a3b69c5f911d01f3704f4df91723f7ddc8d1043c23adf943a56d3c2500", kill_on_drop: false }`
[INFO] [stdout] 9066e5a3b69c5f911d01f3704f4df91723f7ddc8d1043c23adf943a56d3c2500